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Ammonium sulfate chemical
Ammonium sulfate granular chemical
TU U 20.1-36584168-003:2018
Sales Conditions / packaging: EXW, FCA, big bags, 50 kg sacks
Delivery terms: by company transport across Ukraine or self-pickup
UAH
Granular chemical-grade ammonium sulfate ((NH₄)₂SO₄) is a high-purity nitrogen-sulfur fertilizer produced through controlled chemical synthesis. It contains 21% nitrogen (ammonium form) and 24% sulfur (sulfate form). This fertilizer stands out for its exceptional purity, stable composition, and absence of heavy metals, making it suitable even for greenhouse use and complex fertilizer blends.
Recommended use:
- all agricultural crops: cereals, legumes, oilseeds, vegetables, forage crops;
- especially effective for sulfur-demanding crops: rapeseed, soybeans, mustard, garlic, onion;
- main, pre-sowing, post-sowing, row application;
- hydroponic systems, greenhouses, and foliar feeding (in water-soluble form).
Advantages:
- high chemical purity — ideal for sensitive crops and controlled environments;
- stable composition — ensures predictable performance;
- nitrogen + sulfur in one granule — dual action for growth and quality;
- non-caking, durable granules — convenient for transport and spreading;
- improves protein, gluten, and oil content in crops;
- universal for open field use and protected cultivation.
Limitations and warnings:
- do not store near acids, alkalis, or organic fertilizers;
- do not mix with lime-based or calcium fertilizers without prior compatibility testing;
- avoid moisture exposure — may cause caking.
Appearance and color: irregular-shaped granules, color ranges from white to dark brown
| Mass fraction of nitrogen in terms of dry matter, not less, % | 19 |
| Mass fraction of fraction larger than 0.5 mm, % | 80 |
| Mass fraction of fraction smaller than 6 mm, % | 100 |
| Friability, % | 100 |
| Mass fraction of insoluble residue in water, not more than % | 0,5 |
- store in dry, well-ventilated facilities, protected from direct sunlight, with relative air humidity not exceeding 70%. Place bags on pallets at least 15 cm above the floor, arranged in a single layer;
- packaging (bags, big bags) must be tightly sealed to prevent moisture ingress;
- permissible storage temperature: from –20 °C to +35 °C (avoid exposure to high humidity, as this may cause caking or condensation — loosen before use if necessary);
- avoid contact with acids, alkaline substances, organic compounds, or other fertilizers that may cause a chemical reaction;
- in case of prolonged storage, periodically loosen the product to prevent clumping.
Storage guarantee period: 1 month from the date of manufacture, provided that transportation and storage conditions are met. After this period, the product must be tested for compliance with technical specifications before use.
| Culture | Application period /rate, kg/are | Special application conditions | |||
|---|---|---|---|---|---|
| Pre-sowing cultivation | First fertilization | Second fertilization | Third fertilization | ||
| Cereal сrops | |||||
| Winter wheat | 1,4 | - | - | - | applied in autumn before plowing or deep digging |
| - | 1,0-2,4 | - | - | spring tillage | |
| - | - | 1,0-2,9 | - | beginning of the tube | |
| Spring barley | 1,4-4,3 | - | - | - | before pre-sowing cultivation |
| - | 1,4 | - | - | no later than the appearance of 1-2 leaves in the presence of moisture | |
| Maize | 2,6-5,7 | - | - | - | on heavy soils in areas of unstable or insufficient moisture, apply in the fall under plowing |
| 2,9-4,3 | - | - | - | on heavy soils in areas of unstable or insufficient moisture, apply in spring for cultivation | |
| 1,4 | - | - | in the 3-5 leaf phase in the presence of moisture | ||
| Oats | 1,43-4,3 | - | - | - | in spring for replanting cultivation |
| - | 1,4 | - | - | no later than the appearance of 1-2 leaves in the presence of moisture | |
| Industrial crops | |||||
| Sunflower | 3,0 | - | - | - | during primary tillage or before sowing |
| Sugar beet | 5,0 | - | - | - | during primary tillage or before sowing |
| Oilseeds | |||||
| Winter rape | 1,25-3,3 | - | - | - | during autumn (fallow) tillage or before sowing |
| - | 4,0 | - | - | when spring vegetation resumes | |
| - | - | 3,8 | - | in the stem formation phase | |
| - | - | - | 1,9 | in the phase of full budding under conditions of sufficient moisture | |
| Soybeans | 1,4 | - | - | - | during primary tillage or before sowing |
| - | 1,4 | - | - | as needed before flowering begins | |
| Oil flax | 1,9-2,8 | - | - | - | during autumn (fallow) tillage or before sowing |
| - | 0,7-0,8 | - | - | in the fir-tree phase (plants reach a height of 5-10 cm and have 5-6 pairs of leaves) if nitrogen was not applied before sowing | |
| Vegetables | |||||
| Tomatoes | 3,8-7,0 | - | - | - | before plowing or during sowing cultivation, if no further fertilization is planned |
| - | 2,0-4,5 | - | - | when planning fertilization | |
| Peppers | 5,7-6,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,9-3,0 | - | - | when planning fertilization | |
| Zucchini | 4,3-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 2,1-3,6 | - | - | when planning fertilization | |
| Cucumber | 4,0-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,0-2,9 | - | - | when planning fertilization | |
| Aubergine | 3,8-5,7 | - | - | - | before plowing or during pre-sowing cultivation, if no further fertilization is planned |
| - | 1,9-3,8 | - | - | when planning fertilization | |
| Potatoes and other root crops | |||||
| Potatoes | 3,0-6,0 | - | - | - | in the fall for plowing or in the spring for cultivation |
| - | - | 0,9 | - | fertilization during inter-row cultivation when plants reach 15–20 cm in height, provided there is sufficient soil moisture. | |
| Table beet | 3,0-4,0 | - | - | - | on heavy and light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing or in spring under cultivation |
| - | 0,9 | - | - | row fertilization in the presence of moisture | |
| Carrots | 4,3 | - | - | - | on heavy and light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing or in spring under cultivation |
| - | 0,9 | - | - | row fertilization in the presence of moisture | |
| Radish | 4,8 | - | - | - | on light loamy soils in areas of unstable or insufficient moisture, apply in autumn under plowing |
| Onion | 4,3-5,7 | - | - | - | under plowing or into pre-sowing cultivation (if no other fertilizations are planned) |
| 2,4-3,8 | - | - | - | when planning fertilization | |
| Garlic | 2,9-5,7 | - | - | - | under plowing or into pre-sowing cultivation (if no other fertilizations are planned) |
| 2,4-2,9 | - | - | - | when planning fertilization | |
| Fruit trees and berry trees | |||||
| Apple tree | - | 4,5 | - | - | fertilizing in spring before the start of vegetation or from the bud swelling phase to the pink buds phase |
| Pear tree | - | 3,3 | - | - | fertilizing in spring before the start of the growing season/at the beginning of the growing season |
| Cherry tree | - | 5,5 | - | - | spring fertilization before flowering |
| Raspberry | - | 2,9 | - | - | spring fertilization before the start of vegetation |
| Wild Strawberry/Garden Strawberry | - | 2,9 | - | - | spring fertilization before the start of vegetation |
| Blueberries | Fertilize twice a year: at the beginning of the growing season (April) and at the end (August-September). After planting: 2nd year – 1 tbsp, 3rd year – 2 tbsp, 4th year – 4 tbsp, 5th year – 8 tbsp, 6th and subsequent years – 16 tbsp or 40–50 g per adult bush | ||||
| Grapes | - | 5,7 | - | - | spring fertilization before the start of vegetation |
| Flowers and lawn grasses | |||||
| Rose | 0,02-0,03 | - | - | - | into the planting hole |
| - | 0,015-0,020 на 10 л води | - | - | in spring, after pruning and before shedding 1 leaf | |
| - | - | 0,03-0,04 | - | during the period of intensive growth before the beginning of mass flowering | |
| Tulips | - | 3,0 | - | - | for plant heights of 5-8 cm |
| Lawn grasses | 2,9 | - | - | in autumn before lawn establishment | |
| - | 2,4 | - | - | as needed, when the soil warms up to 10 C | |
| - | - | 2,4 | - | as needed, from the beginning of May to the end of June | |
The fertilizer application rates were developed by the Department of Agrochemistry and Soil Science of Uman National University of Horticulture under the scientific supervision of Doctor of Agricultural Sciences, Professor Hospodarenko H.M., commissioned by AC Grossdorf. These recommendations are the intellectual property of AC Grossdorf and may be distributed only with proper attribution to the owner.
The provided application rates are generalized and do not replace the need for consultation with an agronomist.